*{
    padding: 0;
    margin: 0;
}
.index{
    width: 100%;
    height: 900px;
    background-image: url(../img/index.jpg);
    /* 铺满整个容器，多出来会裁剪 */
    background-size: cover;
    background-repeat: no-repeat;
}
img{
    display: block;
    float: left;
    margin: 0 20px;
}
.list>div>ul li{
    float: left;
    line-height: 90px;
    color: #fff;
    font-weight: 700;
    margin: 0 20px;
}
.list>div>ul>:nth-child(1){
    margin-left: 15%;
}
.list>div a{
    color: #fff;
}
.body{
    width: 810px;
    margin: 0 auto;
    position: relative;
    top: 30%;
    left: 5%;
    color: #fff;
    /* right: 15%;
    bottom: 40%; */
}
.body h2{
    font-size: 50px;
}
.body > div{
    margin: 30px 0;
}
.btn{
    display: block;
    width: 240px;
    height: 56px;
    background-color: aqua;
    border-radius: 25px;
    text-align: center;
    line-height: 56px;
    color: #fff;
    margin: 100px auto;
}